CN203738419U - Pin hole locating structure - Google Patents
Pin hole locating structure Download PDFInfo
- Publication number
- CN203738419U CN203738419U CN201420082074.XU CN201420082074U CN203738419U CN 203738419 U CN203738419 U CN 203738419U CN 201420082074 U CN201420082074 U CN 201420082074U CN 203738419 U CN203738419 U CN 203738419U
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- China
- Prior art keywords
- hole
- locating
- pin
- diameter
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003754 machining Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
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- Insertion Pins And Rivets (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The utility model provides a pin hole locating structure. The pin hole locating structure aims to solve the problems that in the prior art, a pin hole locating structure is high in machining precision requirement and high in machining cost and incapable of guaranteeing that the center line of a locating pin and the center line of a locating hole coincide completely. The pin hole locating structure comprises a locking pin and a locking hole. The locating pin is of a four-section structure. The first section of the locating pin is in the shape of a large cylinder. The second section of the locating pin is in the shape of a cone. The third section of the locating pin is in the shape of a small cylinder. The fourth section of the locating pin is threads. The diameter of the large cylindrical locating section of the locating pin is matched with the inner diameter of a tool locating hole I. The diameter of the conical locating section is matched with the inner diameter of a workpiece locating hole. The diameter of the small cylindrical locating section is matched with the inner diameter of a tool locating hole II. The threaded section is provided with a bolt. The pin hole locating structure has the advantages that it can be guaranteed that the center line of the locating pin and the center line of the locating hole completely coincide, the machining precision requirement is low, and machining cost is low.
Description
Technical field
The utility model relates to the pin-and-hole location technology in a kind of machining, specially refers to a kind of pin-and-hole location structure.
Background technology
In the assembling of component of machine processing or plant equipment, usually need the accurate location between workpiece and workpiece or workpiece and frock.Prior art usually adopts pin-and-hole location to realize the accurate location between workpiece and workpiece or workpiece and frock, so-called pin-and-hole location refers in pinpoint more than two or two workpiece of needs or frock locating hole is set, adopt cylindrical alignment pin to penetrate in locating hole, alignment pin external diameter accurately coordinates with locating hole diameter, ensure the coincidence completely of alignment pin and hole centre line, thereby realize two or two above workpiece or frock accurate location each other.Obviously, the machining accuracy of locating hole and alignment pin is determining the positioning precision between workpiece and workpiece, workpiece and frock.The locating hole of prior art pin-and-hole location structure is manhole, and alignment pin is cylindrical, no matter be the position of circular positioning through hole and the machining accuracy of diameter, or the machining accuracy of cylindrical alignment pin external diameter all directly has influence on positioning precision.For ensureing positioning precision, only be improved the position of circular positioning through hole and the machining accuracy of diameter, improve the machining accuracy of cylindrical alignment pin external diameter, thereby improved the processing cost of pin-and-hole location, and can't ensure the coincidence completely of alignment pin and hole centre line.Obviously, it is higher that prior art pin-and-hole location structure exists requirement on machining accuracy, and processing cost is higher, and can not ensure the problems such as the coincidence completely of alignment pin and hole centre line.
Summary of the invention
Higher for solving the requirement on machining accuracy that prior art pin-and-hole location structure exists, processing cost is higher, and can not ensure the problem such as coincidence completely of alignment pin and hole centre line, the utility model proposes a kind of pin-and-hole location structure.The alignment pin of the utility model pin-and-hole location structure is four segment structures, and the first paragraph of alignment pin is great circle cylindricality, and second segment is conical, and the 3rd section is small cylindrical, and the 4th section is screw thread; The diameter of alignment pin great circle cylindricality positioning section and the internal diameter of tool locating hole I match, and the internal diameter of the diameter of taper positioning section and workpiece locating hole matches, and the internal diameter of the diameter of small cylindrical positioning section and tool locating hole II matches, and thread segment is fitted with bolt; The internal diameter of the diameter of described taper positioning section and workpiece locating hole matches and refers to that the top diameter of taper positioning section is less than workpiece locating hole internal diameter, and diameter at butt end is greater than workpiece locating hole internal diameter.
Further, the workpiece locating hole of the utility model pin-and-hole location structure is taper hole, and its tapering is identical with the tapering of alignment pin taper positioning section, and the top diameter of taper hole is greater than the top diameter of taper positioning section.Taper hole ground diameter at butt end is less than the diameter at butt end of taper positioning section.
The useful technique effect of the utility model pin-and-hole location structure is the coincidence completely that can ensure alignment pin and hole centre line, and requirement on machining accuracy is lower, and processing cost is lower.
Brief description of the drawings
Accompanying drawing 1 is the structural representation that the utility model pin-and-hole location structure workpiece locating hole is through hole;
Accompanying drawing 2 is structural representations that the utility model pin-and-hole location structure workpiece locating hole is taper hole.
Below in conjunction with the drawings and specific embodiments, the utility model pin-and-hole location structure is further described.
Detailed description of the invention
Accompanying drawing 1 is the structural representation that the utility model pin-and-hole location structure workpiece locating hole is through hole, in figure, l is alignment pin, and 3 is workpiece, and 4 is nut, 11 is alignment pin great circle cylindricality positioning section, 12 is alignment pin taper positioning section, and 13 is alignment pin small cylindrical positioning section, and 14 is alignment pin thread segment, 21 is tool locating hole I, and 22 is tool locating hole II.As seen from the figure, the alignment pin 1 of the utility model pin-and-hole location structure is four segment structures, and the first paragraph of alignment pin is great circle cylindricality 11, and it is that 13, the four sections of small cylindrical are screw thread 14 that second segment is conical 12, the three sections; The diameter of alignment pin great circle cylindricality positioning section 11 and the internal diameter of tool locating hole I 21 match, the diameter 12 of taper positioning section matches with the internal diameter of workpiece 3 locating holes, the internal diameter of the diameter of small cylindrical positioning section 13 and tool locating hole II 22 matches, and thread segment 14 is fitted with nut 4; The internal diameter of the diameter of described taper positioning section 12 and workpiece 3 locating holes matches and refers to that the top diameter of taper positioning section 12 is less than workpiece 3 locating hole internal diameters, and diameter at butt end is greater than workpiece 3 locating hole internal diameters.In the time that reality is used, alignment pin 1 is inserted from tool locating hole I, through after the locating hole of workpiece 3, then through tool locating hole II, re-use nut 4 and be sleeved on alignment pin thread segment.Slowly fastening nut 4, meanwhile, adjusts the position of workpiece 3.Because the top diameter of taper positioning section is less than workpiece locating hole internal diameter, and diameter at butt end is greater than workpiece locating hole internal diameter, and, the diameter of alignment pin great circle cylindricality positioning section and the internal diameter of tool locating hole I match, the internal diameter of the diameter of small cylindrical positioning section and tool locating hole II matches, workpiece locating hole will make the center line of workpiece locating hole overlap completely with the center line in tool locating hole under the effect of taper positioning section, thereby has ensured the positioning precision between workpiece and frock.Automatically adjust the position of center line of workpiece locating hole because the utility model pin-and-hole location structure adopts taper positioning section, therefore, the machining accuracy of whole pin-and-hole location structure requires lower with respect to prior art, and its processing cost is also relatively low.
Accompanying drawing 2 is structural representations that the utility model pin-and-hole location structure workpiece locating hole is taper hole, in figure, l is alignment pin, and 3 is workpiece, and 4 is nut, 11 is alignment pin great circle cylindricality positioning section, 12 is alignment pin taper positioning section, and 13 is alignment pin small cylindrical positioning section, and 14 is alignment pin thread segment, 21 is tool locating hole I, and 22 is tool locating hole II.As seen from the figure, for further improving the positioning precision of the utility model pin-and-hole location structure, workpiece locating hole can be designed to taper hole, and its tapering is identical with the tapering of alignment pin taper positioning section, and the top diameter of taper hole is greater than the top diameter of taper positioning section.Taper hole ground diameter at butt end is less than the diameter at butt end of taper positioning section.In the process of fastening nut, taper positioning section will progress in the taper locating hole of workpiece.Because the tapering of taper locating hole is identical with the tapering of alignment pin taper positioning section, both can closely cooperate, thus, can make the center line of workpiece locating hole overlap completely with the center line in tool locating hole, thereby ensure the positioning precision between workpiece and frock.
Obviously, the useful technique effect of the utility model pin-and-hole location structure is the coincidence completely that can ensure alignment pin and hole centre line, and requirement on machining accuracy is lower, and processing cost is lower.
Claims (2)
1. a pin-and-hole location structure, comprises alignment pin and locating hole, it is characterized in that: alignment pin is four segment structures, and the first paragraph of alignment pin is great circle cylindricality, and second segment is conical, and the 3rd section is small cylindrical, and the 4th section is screw thread; The diameter of alignment pin great circle cylindricality positioning section and the internal diameter of tool locating hole I match, and the internal diameter of the diameter of taper positioning section and workpiece locating hole matches, and the internal diameter of the diameter of small cylindrical positioning section and tool locating hole II matches, and thread segment is fitted with bolt; The internal diameter of the diameter of described taper positioning section and workpiece locating hole matches and refers to that the top diameter of taper positioning section is less than workpiece locating hole internal diameter, and diameter at butt end is greater than workpiece locating hole internal diameter.
2. pin-and-hole location structure according to claim 1, it is characterized in that: workpiece locating hole is taper hole, its tapering is identical with the tapering of alignment pin taper positioning section, and the top diameter of taper hole is greater than the top diameter of taper positioning section, and the diameter at butt end of taper hole is less than the diameter at butt end of taper positioning section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082074.XU CN203738419U (en) | 2014-02-26 | 2014-02-26 | Pin hole locating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082074.XU CN203738419U (en) | 2014-02-26 | 2014-02-26 | Pin hole locating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203738419U true CN203738419U (en) | 2014-07-30 |
Family
ID=51338282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420082074.XU Expired - Lifetime CN203738419U (en) | 2014-02-26 | 2014-02-26 | Pin hole locating structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203738419U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705243A (en) * | 2018-07-10 | 2018-10-26 | 上汽通用五菱汽车股份有限公司 | Nut welds positioning tool between two parties |
| CN114888735A (en) * | 2022-05-30 | 2022-08-12 | 宁夏共享精密加工有限公司 | Positioning device and using method thereof |
-
2014
- 2014-02-26 CN CN201420082074.XU patent/CN203738419U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705243A (en) * | 2018-07-10 | 2018-10-26 | 上汽通用五菱汽车股份有限公司 | Nut welds positioning tool between two parties |
| CN114888735A (en) * | 2022-05-30 | 2022-08-12 | 宁夏共享精密加工有限公司 | Positioning device and using method thereof |
| CN114888735B (en) * | 2022-05-30 | 2024-01-02 | 宁夏共享精密加工有限公司 | Positioning device and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |